Low-Cost, µP Supervisory Circuits The MAX706CPA+ is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** Maxim Integrated (Analog Devices)
- **Part Number:** MAX706CPA+
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)
- **Operating Voltage Range:** 1.0V to 5.5V
- **Reset Threshold Options:** Adjustable or fixed (4.40V, 4.65V, or 4.90V for 5V systems)
- **Reset Timeout Period:** 200ms (min)
- **Operating Temperature Range:** 0°C to +70°C
- **Manual Reset Input:** Active-low (MR)
- **Watchdog Timer:** 1.6s timeout (typical)
- **Power-On Reset (POR) Circuitry:** Ensures proper reset during power-up
### **Descriptions:**
The MAX706CPA+ is a supervisory IC designed to monitor power supply voltages in microprocessor-based systems. It provides a reset signal to the μP if the supply voltage drops below a preset threshold, ensuring reliable system operation. It also includes a watchdog timer to detect software lockups and a manual reset input for user-initiated resets.
### **Features:**
- **Voltage Monitoring:** Monitors VCC for undervoltage conditions.
- **Reset Output:** Active-low RESET signal for μP control.
- **Watchdog Timer:** Requires periodic toggling to prevent system reset.
- **Manual Reset Input:** Allows external push-button reset.
- **Low Power Consumption:** Typically 50μA supply current.
- **Power-Fail Comparator:** Early warning for impending power loss.
- **Guaranteed Reset Valid to VCC = 1V:** Ensures reliable operation at low voltages.
This information is strictly based on the manufacturer's datasheet for the MAX706CPA+.
